Gas-burner



(No Model.)

D.. Z. EVANS.

GAS BURNER.

No. 894,645. Patented Dec. 18, 1888.

SNVENTORJ WiTNEssEs;

ATTORN EY.

wf M N. PETERS, Phnllhhnghpher, Washingols D. C.

UNITEDv STATES l PATENT OEETCE.

DAVID Z. EVANS, OF PHILADELPHIA, PENNSYLVANIA.

GAS-BURN ER.

SPECIFICATION forming part of Letters Patent No. 394,645, dated December18, 1888.

Application filed December 20, 1887. Serial No. 258,476. (No model.)

To @ZZ whom it may concern:

Be it known that I, DAVID Z. EVANS, a citizen of the United States,residing in the city and county of Philadelphia, State of Pennsylvania,have invented a new and useful Improvement in Gas-Burners, whichimprovement is fully set forth in the following' specification andaccompanying drawings.

My invention consists of a gas-burner having means for supplying thesame with heated air, as will be hereinafter set fort-h and claimed.

It further consists in the combination and arrangement of parts, ashereinafter described and claimed.

Figure l represents a vertical section of a gas-burner embodying myinvention. Fig. 2 represents a horizontal section thereof in line Fig.l.

Similar letters of reference indicate corresponding' parts in the twofigures.

Referring to the drawings, A represents a burner, which is of the formof an annulus, with openings or jets at top and supply-pipes B connectedat bottom, the latter being attached to the main pipe C.

Encircling the annulus or burner A and firmly secured thereto is aperforated plate, D, which supports the chimney E and guard F. Dependingfrom the plate D and inclosing the lower part of the burner is achamber, G, from the center of which rises a flue, II, the latterentering a shell, J, which is secured to a button, disk, or deflector,K, and depends therefrom into the space within the inner wall of theannulus or burner A. The deflector K,located above the burner A, isfitted to a screw-rod, L, which rises from the top wall of t-he pipes B,passes through the flue II, extends above the deflector K, and hasfitted to its top a nut or screw-button, J.

Resting' on the deflector is a hollow cylinder or shell, M, which isheld in position by the nut or button J on the top thereof.

It will be seen that when the burner is lighted the flame assumes theform shown by the dotted lines, or approximately so. The cylinder M anddetlcctor K are heated by the flame, the heat being also transmitted tothe flue H and shell J. Air enters the flue H, rises to the top thereof,and is deflected into the' shell J, and, descending the latter, entersthe bottom of the central space and is supplied to the interior of thellame. Some of the hot air after leaving the shell J enters the chamberG and, ascending the same, reaches the exterior of the flame through theperforated plate I) and guard F. By these means the flame is suppliedwith large quantities of air in heated condition.

By rotating the detlector K it maybe raised or lowered, the button J"being also raised or lowered as the core M follows the motions of saiddel-lector K. By this provision the defiector maybe set nearer to orfarther from the top of the burner, and thus regulate the flame thereof.

Below the chamber G is an adjusting de- Vice, N, vfor the air admittedto the burner, the same being shown of the form of a concave plate,which has a central collar, the inner wall whereof is threaded forengagement with a threaded portion of the pipe whereby said plate may beraised or lowered for varying the space between the chamber N and saidplate, so that greater or less quantity of air may be admitted to saidspace, and consequently to the flue II.

In the inner wall of the burner A, at the low'er portionthereof, areperforations a, forming jets for the escape of gas at said inner wall,the same when ignited serving to heat the burner, and thereby causeheating of the gas prior to consumption by the burner proper.

Ilaving thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. The combination of the supply-pipe ll t, the annular burner A, thescrew-rod I., the dell ector K, adjustable thereon, the shell J,depending from said deliector, the flue Il, entering said shell, thecylinder M above said deflector, and the button J above said cylinder,substantially as described.

2. 'lhe burner A, with openings at the top, in combination withperforated plate l), the

chimne Y E and uard F on said )late the deflector K, with supporttherefor and depending shell J, and the chamber (lr,with tube H risingtherefrom and within the shell J, substantially as and for the purposeset forth,

. The burner A, having openings at the IOO top and openings a at thebottom, in combi- I'lation with the perforated plates D, the guard F,the delector K, with support therefor, the depending shell J, and thechamber G, With tube H rising therefrom and Within the shell J,substantially as and for the purpose set forth.

4. The inlet-pipe C and the burner A, n combination with the perforatedplate D, the

deeetor K, secured to the rod L, the depend- 1o ing Shell J, the chamberG, With tube H, the latter entering said shell J, and the concave shellN, adjustable on said inlet-pipe, said parts combined substantially asdescribed. DAVID Z. EVANS. Witnesses:

JOHN A. WIEDERsHEIM, A. P. JENNINGS.

